kxMkXhQB

1package newpackage;
2
3            import javax.crypto.KeyGenerator;
4            import javax.crypto.Mac;
5            import javax.crypto.SecretKey;
6            import org.apache.ws.security.util.Base64;
7
8
9            public class GenerateMessageID {
10
11         public static void main(String[] args) {
12
13         try{
14                  KeyGenerator keyGen = KeyGenerator.getInstance("SHA1 ");
15
16            /** for generating a key   */    
17                  SecretKey key = keyGen.generateKey();
18
19                 Mac mac = Mac.getInstance(key.getAlgorithm());
20                    mac.init(key);
21                    String message = "TESTED";
22
23            // get the string as UTF-8 bytes
24                    byte[] b = message.getBytes("UTF-8");
25
26
27             // create a digest from the byte array
28                        byte[] digest = mac.doFinal(b);
29
30
31                }catch(Exception e){
32            e.printStackTrace();
33            }
34                }
35
36            }
37
38
39
40
41
42    error: